Virco's most popular hard plastic chair desk features the strength and long-lasting color of Martest 21 hard plastic material for seats, backs and work surfaces. Features a 1.125-in. tubular steel frame and a welded-on, steel-rod bookrack and markproof, stain-proof 20x14.5-inch writing surface with a comfortable, space-saving tablet arm. This classroom chair desk from Virco is built with a traditional 4-leg design that maximizes classroom space.